Activists hang off of trucks loaded up with U.S. humanitarian aid, chanting "yes we can" on Colombia-Venezuela border on February 23, 2019. Venezuelan opposition attempted to pass the aid across the blockaded border crossings in Cúcuta, Colombia, but were met by tear gas and rubber bullets by Venezuelan forces.

A student in the Colombia-Venezuela border town of Paraguachon, Colombia peers out the clay building at her classmate on May 7, 2019. Venezuelan students at the school, called "pendulum kids," cross illegally from Venezuela to Colombia every day for class.

Venezuelan migrant Fabiana Correa Martinez, 4, kisses the belly of her pregnant mother Nairobi Correa Martinez in a migrant soup kitchen in Cucuta, Colombia on February 9, 2019. The migrants fled starvation and collapse in Venezuela, but after learning that her daughter would be born "stateless" in Colombia, Nairobi decided to return to Venezuela.

San Jose Hospital on the Venezuela border town of Maicao, Colombia has seen a surge in pregnant Venezuelan immigrants flooding into its doors as the country's medical system collapses. With it has come a surge in high-risk pregnancies, maternal and infant mortalities and chronic diseases, which medical staff don't have the resources to treat.

Venezuelan migrant Yulianis Rodriguez throws her head back in pain as she gives birth in a public hospital in Maicao, Colombia on May 5, 2019. The young migrant bites down on a towel in her mouth to help with the pain.